Re: [PATCH v6 1/2] Provide in-kernel headers to make extending kernel easier

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On Fri, Apr 12, 2019 at 8:10 PM Masahiro Yamada
<yamada.masahiro@xxxxxxxxxxxxx> wrote:
>
> On Sat, Apr 13, 2019 at 11:58 AM Masahiro Yamada
> <yamada.masahiro@xxxxxxxxxxxxx> wrote:
> >
> > On Sat, Apr 13, 2019 at 10:53 AM Daniel Colascione <dancol@xxxxxxxxxx> wrote:
> > >
> > > On Fri, Apr 12, 2019 at 6:49 PM Masahiro Yamada
> > > <yamada.masahiro@xxxxxxxxxxxxx> wrote:
> > > >
> > > > On Sat, Apr 13, 2019 at 3:02 AM Joel Fernandes <joel@xxxxxxxxxxxxxxxxx> wrote:
> > > >
> > > > >
> > > > > > > +extern char kernel_headers_data;
> > > > > > > +extern char kernel_headers_data_end;
> > > > > > > +
> > > > > > > +static ssize_t
> > > > > > > +ikheaders_read_current(struct file *file, char __user *buf,
> > > > > >
> > > > > > Could you stretch this line ?
> > > > > > It will still fit in 80-cols.
> > > > > >
> > > > > > (This is a coding style error in kernel/configs.c)
> > > > >
> > > > > It takes 87 cols if I expand, so I'll leave it as is.
> > > > >
> > > >
> > > >
> > > > Sorry if what I said was unclear.
> > > >
> > > > Since I just did not a good reason to put
> > > > "static ssize_t" in the previous line,
> > > > I meant like follows:
> > > >
> > > >
> > > > [Before]
> > > > static ssize_t
> > > > ikheaders_read_current(struct file *file, char __user *buf,
> > > >                        size_t len, loff_t *offset)
> > > >
> > > >
> > > >
> > > > [After]
> > > > static ssize_t ikheaders_read_current(struct file *file, char __user *buf,
> > > >                                       size_t len, loff_t *offset)
> > > >
> > > >
> > > > (takes 74-cols.)
> > > >
> > > >
> > > > (I am sending this from Gmail, so I am not sure
> > > > how it will look like from you...)
> > > >
> > > >
> > > > Anyway, it is super-bikeshedding stuff.
> > > > It is OK as-is.
> > > >
> > >
> > > What about sorting the files for determinism?
> >
> >
> > Do you mean the order of files in the tar archive?

Yes.

> > I think it is a good idea for reproducible build.
> >
> >
> >
> > It looks like the tar command supports --sort=name option,
> > but I did not test it at all.
> >
> >
> >
> > Perhaps, the sorting policy could be affected by locale.
> > We saw it for the 'find' command.
>
>
> 'sort' command is affected by locale.

It should be independent of locale if you set LC_ALL=C in the
environment while running it.



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